Pump



M. M. LIFF.

PUMP.

APPLICATION FILED MAR. I9. I92o.

Patented Sept, 13, 1921.

2 SHEETS-SHEET l.

fitr.wnavfllrivvafrlnvllin.. f.,

I 'Maddgwja iff INVENTOR ATTORNEY Nl. M. LIFF.

PUMP.

APPLICATION FILED MAR. I9, I92o.

m .fm w. s .Mm 4 am n w W d 2 m M .w um w I 7 j A Z Z VK E LTI- WITNESS:

UNITED STATES HADISON 1I.' LIFF, 0F LOS ANGELES, CALIFORNIA.

rum'.

Specification of Letters Patent.

Patented sept. 1s, 1921.

Application led March 19, 1920. Serial No. 367,066.

f To all wlwm it may concern.'

Be it known that I, MADISON M. LIFE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented newand Vuseful Improvements in Pumps, of which the following is a specification.

This invention relates to a pump mechanism, more particularly designed for oil wells and one of the objects `of the inventionis to provide means for emptying the pump when the'same is to be ulled from the well so as to insure a perfect y dry well. l

Another object of the invention is to pro. vide clutch means for easily and quickl attaching or detaching the rod to and rom the plunger.

Another object of the invention is to provide means for insuring a practically perfect vacuum above the standing valve including means or'fproviding a supply of reserved packing an lubricant.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and s ecically pointed out in the .appended c aims.

b In describing my invention in detail', reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and 1n which Figure 1 is a sectional view ofthe invention with parts shown in elevation.

Fi 2 is an enlarged detail view `of the clutc mechanism. Y

Fi 3.is an enlarged detail view of the packing means.

Fig. 4 is an enlarged detail view of the emptying means.

In these views 1 indicates the pump barrel which is formed of sections, said sections being connected together by the coupling rings 2. 3 indicates the pump rod which-has its lower end tapered as at 4 and above this tapered Apart the rod is formed with the recesses 5. cou ling 6 is connected with the plunger barrel?? by the yoke 8, said yoke being bowed as shown so thatit will offer but little resistance to the iow of fluid from the top of the lunger barrel. The block 6 is provided wit the'bore 9 at its upper part to receive the lower end of the rod 3, said bore being shaped toconform to the shape of said rod. Lateral openings 10 pass through the walls of the block and these `openings receive thex Wedge-shaped sliding dogs 11 which have their wedge-shaped ends placed into the recesses 5 in the rod by means of the llat springs 12 connected by theblock. As will vbe seen in this position of the dogs the rod 3 will be locked to the clutch block.

Trip levers 13 are pivotally'mounted in the block with their short arms engaging recesses 14 formed in the dogs. The long arms extend outwardly from the sides of the block and are adapted to be engaged by the annular member 15 which is of wedge-shape in cross section and has its neck itting between the ends of two of the sections of the pump barrel and held in position by one of the coupling rings 2. It will thus be seen that when the outer arms of the trip levers 13 strike the wedge-shaped part of the member 15 they'T will be moved downwardly so that the short arms will force the dogs outwardly against the springs and thus release the lpump rod from the clutch block.

T e plunger barrel 7 is of cylindrical form and carries a valve seat 16 at its lower end,

said seat receiving .the ball valve 17.. The packing `for this plunger barrel consists of Ithe upper and lower packing seats -18 which are placedbetween the ends of adjacent sections ofthe pump barrel and secured in position by the coupling rings. These seats are provided with the curved walls 19 for forclng the packing 20 against the pump barrel. A cylinder 21 is located around the plunger barrel with its ends spaced from the packing seats and this cylinder is supported by a ring 22 which fits between the ends of two sectlons of the pump barrel and is held in position by one of the coupling, rings. The space between the said cylinder 21 and the pump barrel is partly occupied by the reserved packing and this space also receives the compression springs 23 which have their ends bearing against the said reserved packing and the ring. These springs tend to force the packing against the curved walls of the packing seats and these walls force the packing inwardly against the plunger barrel thus forming a practicall air-tlght' packing for the plunger barre.

The c linder holds the reserved packing l is supplied with lubricant and thus the reserved supply of lubricant is held in a space between the cylinder and pump barrel.

A sleeve 24 is located below the lower packing seat and forms an extension thereof to receive the lower end of the plunger barrel.

A casting 25 formed with the valve seat 26 is located in the pump barrel adjacent its lower end and this casting is located between the ends-of two sections of the pump barrel and is secured in place by one of the coupling rings. The valve seat 26 supports the ball valve 27 and a. cage 28 is detachably secured to the casting for guiding the valve 27 to its seat. The upper 'end of the cage carries a projection 29 which is adapted to strike the ball valve 17 and force the same from its seat `when the plunger barrel is released from the pump rod by the coupling means before described.

l also provide means for raising the valve 27 off its seat when said lunger barrel is released from the rod. uch means consists of a plunger 30 having its lower end entering an opening 31 in the casting 25 and its reduced upper end slidably secured to the cage by the bolts 32. A spring 33 in the opening 31 holds the plunger in its upper position. The upper end of the plunger is provided with a head 34 which is adapted to be struck by the descending end of the plunger barrel to force, the plunger 30 downwardly. A wedge member 35 is slidably mounted in a lateral opening 36 formed in the cage above the valve seat and the outer end of said member engages a recess 37 formed in the plunger 30. This recess is provided with an inclined wall so that as the plunger is lowered the inclined wall will force the wedge member 35 inwardly so as to raise the valve 27 off its seat. In this way'both the valves will be raised off their seats when the plunger barrel -is released from the pump rod so that the fluid will drain from said plunger barrel and the space below into the well. l

The lower end of the pump rod is provided with the reduced extension 38 which is perforated and filtering means may be placed around said extension, such means consisting of the cups 40 which carry suitable filtering material, the lower end of the extension is closed by the cap 25.' As the specific arrangement of these filtering means forms no part of my invention they will not be described in detail.

When the pum rod is reciprocated the upward stroke o the plunger barrel will create a suction in the pump barrel below the plunger and this suction will cause the oil to flow through the filter caps into the extension, and from the extension the oil will fiow into the lower end of the pump barrel, raising the valve 27 o its seat and entering the space above said valve. On the downward stroke the vvalve 27 will be seated and the oil above the valve will be caused to pass into the plunger barrel, raising the valve 17 off its seat by the pressure created. The oil in the plunger barrel will be forced upwardly by the oil entering the barrel and thus the oil Willflow from'said plunger barrel through the voke into the pump barrel and thus be lifted to the outlet of the pump.

When the pump is to be lifted the rod 1 is moved upwardly far enough to cause the trip levers 13 to. strike the wedge-shaped member 15 to release the dogs from the rod. The plunger barrel will then drop back until its ends strike the head 34 of the plunger 30 so as to cause the parts to raise the valves 17 and 27 ofi'their seats and permit the oil to return to the well. The parts remain in this position until the pump rod is again lowered into the clutch block and engaged by the dogs.

The ball valve in the bottom of the plunger removes all tendency of the liquidltherein to rush back and fill the vacuum being formed below as the plunger is on its upward stroke. The system of packing around the outside of the plunger completely prevents the return of fluid or air from above, and insures a complete intake from the well through the valve just above the filter This system of packing is so arranged as to hold in reserve a large surplus of lfresh clean packing thoroughly lubricated ready for sup lying the worn out portion in contact wit the plunger. The reserve packing is not in contact with the plunger until required by the Ioperation of the pump. I

The filtering means will prevent all objectional matter such as clay, mud, sand nd the like from entering the pump to clog nd cause wear of the parts of the same.

It is thought from the foregoin description that the advantages and nove features of my invention will be readily apparent.

l I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended'claims.

1. A pump of the class described comprising a pump barrel, a plunger barrel within the same, a pump rod, clutch means for connecting the same to the plunger barrel, a valve located at the lower end ot the plunger barrel, packing means for said plunger barrel, a valve at the lower end of the pump barrel, and means for moving both valves 0E their seats when the plunger barrelis released from the pump rod by the clutch means. 2. A pump ot the class described comprising a pump barrel, a plunger barrel therein,

a pump rod, means for detachably connecting the rod with the plunger barrel, a valve seat at the lower end of the plunger barrel, a ball valve for engaging said seat, a valve seat at the lower end of the pump barrel, a ball valve for engaging said seat, a cage carried by the seat at the lower end of the pump barrel, a projection on said cage for engaging the ball valve of the plunger barrel and means for forcing the lower valve off its seat by. the plunger barrel when t-he same is released from the pump rod.

3. A pump of the class described comprising a pump barrel, a plunger barrel therein,-

a pump rod, means for detachably connecting the rod with the plun er barrel, a valve seat at the lower end of t e plunger barrel, a ball valve for engaging said seat, a valve seat at the lower end of the pump barrel, a ball valve for engaging said seat, a cage carriedI by the seat at the lower end of the pump barrel, a projection on said cage for engaging the ball valve of the plunger barrel and means for forcing the lower valve off its seat by the plunger barrel when the same is released from the pump rod, said means including a spring pressed plunger` having a head adapted to be struck-by the plunger barrel and a sliding member carried by the cage and adapted to be forced inward y by said lspring pressed plunger to force the valve 0E its seat.

4. A pump of the class described comprisleased from the pump rod,

ing a pump barrel, a plunger barrel therein, a pump rod, means for detachably connecting the rod with the plunger barrel, a Valve seat at the lower end of the plunger barrel, a ball valve for engaging said seat, a valve seat at the lower end of the pump barrel, a ball valve for engaging said seat, a cage carried by the seat at the lower end of the pump barrel, a projection on said cage for engaging the ball valve of the plunger barrel and vmeans for forcing the lower valve off its seat by the plunger barrel when the same is released from the pump rod, and packing means for the lunger barrel.

5. A pump o the, class described comprising a pump barrel, a plunger barrel therein, a pump rod, means for detachably connecting therod with the plunger barrel, a valve seat at the lower end of the plunger barrel, a ball valve for engaging said seat, a Valve seat at the lower end of the pump barrel, a ball valve for engaging saidseat, a cage carried by the seat at the lower end of the pump barrel, a projection on said cage for engaging the ball valve ofthe plunger barrel, means for forcing the lower valve off its seat by the plunger barrel when the same is reacking means for the plunger barrel and ltering means at the end of the pump barrel. v

In testimony whereof l a'ix my signature.

MADISON M. LFF. 

